/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.sync.externalpipe.operation;

/**
 * Operation represents the data changes of the server.
 */
public abstract class Operation {
    public enum OperationType {
        INSERT,
        DELETE;
    }

    private OperationType operationType;

    private final String storageGroup;
    // The data rang is [startIndex, endIndex),
    // i.e. valid data include startIndex and not include endIndex
    private long startIndex;
    private long endIndex;

    public Operation(
            OperationType operationType, String storageGroup, long startIndex, long endIndex) {
        this.operationType = operationType;
        this.storageGroup = storageGroup;
        this.startIndex = startIndex;
        this.endIndex = endIndex;
    }

    public OperationType getOperationType() {
        return operationType;
    }

    public String getOperationTypeName() {
        return operationType.name();
    }

    public long getStartIndex() {
        return startIndex;
    }

    public long getEndIndex() {
        return endIndex;
    }

    public String getStorageGroup() {
        return storageGroup;
    }

    public long getDataCount() {
        return endIndex - startIndex;
    }

    @Override
    public String toString() {
        return "operationType="
                + getOperationTypeName()
                + ", storageGroup="
                + storageGroup
                + ", startIndex="
                + startIndex
                + ", endIndex="
                + endIndex;
    }
}
